Which of the following are the indicators of pollution ?

Q. Which of the following are the indicators of pollution ?

A

Lichen

B

Fungi

C

Algae

D

None of these

Solution:

Lichens can be used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere.
Lichens are plants that grow in exposed places such as rocks or tree bark.
Lichens have species-specific response patterns to increasing levels of atmospheric pollutants, ranging from relative resistance to high sensitivity.

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